/*
 * This file contains code from "C++ Primer, Fourth Edition", by Stanley B.
 * Lippman, Jose Lajoie, and Barbara E. Moo, and is covered under the
 * copyright and warranty notices given in that book:
 *
 * "Copyright (c) 2005 by Objectwrite, Inc., Jose Lajoie, and Barbara E. Moo."
 *
 *
 * "The authors and publisher have taken care in the preparation of this book,
 * but make no expressed or implied warranty of any kind and assume no
 * responsibility for errors or omissions. No liability is assumed for
 * incidental or consequential damages in connection with or arising out of the
 * use of the information or programs contained herein."
 *
 * Permission is granted for this code to be used for educational purposes in
 * association with the book, given proper citation if and when posted or
 * reproduced.Any commercial use of this code requires the explicit written
 * permission of the publisher, Addison-Wesley Professional, a division of
 * Pearson Education, Inc. Send your request for permission, stating clearly
 * what code you would like to use, and in what specific way, to the following
 * address:
 *
 *  Pearson Education, Inc.
 *  Rights and Contracts Department
 *  75 Arlington Street, Suite 300
 *  Boston, MA 02216
 *  Fax: (617) 848-7047
*/

#include <iostream>
#include "Sales_item.h"
using std::cout;
using std::endl;


int main()
{
	Sales_item item, *p;

	// three ways to obtain size required to hold an object of type Sales_item
	sizeof(Sales_item); // size required to hold an object of type Sales_item
	sizeof item; // size of item's type, e.g., sizeof(Sales_item)
	sizeof* p;   // size of type to which p points, e.g., sizeof(Sales_item)

	cout << "short: " << sizeof(short) << "\n"
		 << "short[3]: " << sizeof(short[3]) << "\n"
		 << "short*: " << sizeof(short*) << "\n"
		 << "short&: " << sizeof(short&) << endl;

	cout << endl; // to separate output

	cout << "Sales_item: " << sizeof(Sales_item) << "\n"
		 << "Sales_item[3]: " << sizeof(Sales_item[3]) << "\n"
		 << "Sales_item*: " << sizeof(Sales_item*) << "\n"
		 << "Sales_item&: " << sizeof(Sales_item&) << endl;

// Differentiate use of sizeof array and sizeof on a pointer:
// First output statement will print 10; second prints 1
// The first statement divides size of entire array by size of an element
// The second divides size of a pointer by the size of an int
	{
		int x[10];
		int* p = x;

		cout << sizeof(x) / sizeof(*x) << endl;
		cout << sizeof(p) / sizeof(*p) << endl;
	}
	return 0;
}
